ICS 77.140.60; 77.140.65

Walzdraht, Stäbe und Draht aus Kaltstauch- und Kaltfließpress-stählen – Teil 4: Technische Lieferbedingungen für Vergütungsstähle

European Standard EN 10263-4 : 2001 has the status of a DIN Standard.

A comma is used as the decimal marker.

National forewordThis standard has been prepared jointly by ECISS/TC 15 ‘Wire rod – Qualities, dimensions, tolerances andspecific tests’, ECISS/TC 23 ‘Steel for heat treatment, alloy steels and free-cutting steels – Qualities’, andECISS/TC 30 ‘Steel wires’.The responsible German body involved in its preparation was the Normenausschuss Eisen und Stahl (Steeland Iron Standards Committee), Technical Committee Kaltstauch- und Kaltfließpressstähle.For ease of reference, the table overleaf correlates the material designations/symbols used in DIN 1654-4with those given in the present standard.

Ref. No. DIN EN 10263-4 : 2002-02English price group 11 Sales No. 1111

05.02

DEUTSCHE NORM February 2002

EN 10263-4{

Continued overleaf.EN comprises 16 pages.

© No part of this standard may be reproduced without the prior permission ofDIN Deutsches Institut für Normung e.V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).

Steel rod, bars and wire for cold heading and cold extrusionPart 4: Technical delivery conditions for steels for quenching

and temperingEnglish version of DIN EN 10263-4

Supersedes DIN 1654-4,October 1989 edition.

Table: Correlation of the material designations used in DIN 1654-4 and EN 10263-4

Material designation

DIN 1654-4 EN 10263-4

Symbol Number Symbol Number

Cq 22 1.1152 – –

Cq 35 1.1172 C35EC 1.1172

Cq 45 1.1192 C45EC 1.1192

38 Cr2 1.7003 38Cr2 1.7003

46 Cr 2 1.7006 46Cr2 1.7006

34 Cr 4 1.7033 34Cr4 1.7033

37 Cr 4 1.7034 37Cr4 1.7034

41 Cr 4 1.7035 41Cr4 1.7035

25 CrMo 4 1.7218 25CrMo4 1.7218

34 CrMo 4 1.7220 34CrMo4 1.7220

42 CrMo 4 1.7225 42CrMo4 1.7225

34 CrNiMo 6 1.6582 34CrNiMo6 1.6582

30 CrNiMo 8 1.6580 – –

22 B 2 1.5508 23B2 1.5508

28 B2 1.5510 28B2 1.5510

35 B 2 1.5511 – –

19 MnB 4 1.5523 (20MnB4) (1.5525)

AmendmentsDIN 1654-4, October 1989 edition, has been superseded by the specifications of EN 10263-4.

Previous editionsDIN 1654: 1954-08; DIN 1654-4: 1980-03, 1989-10.

Page 2DIN EN 10263-4 : 2002-02

English version

ICS 77.140.60; 77.140.65

Descriptors:

Steel rod, bars and wire for cold headingand cold extrusion

Part 4: Technical delivery conditions for steels for quenchingand tempering

© 2001. CEN – All rights of exploitation in any form and by any meansreserved worldwide for CEN national members.

Ref. No. EN 10263-4 : 2001 E

Walzdraht, Stäbe und Draht ausKaltstauch- und Kaltfließpress-stählen – Teil 4: Technische Liefer-bedingungen für Vergütungsstähle

This European Standard was approved by CEN on 2001-04-19.CEN members are bound to comply with the CEN/CENELEC Internal Regulationswhich stipulate the conditions for giving this European Standard the status of anational standard without any alteration.Up-to-date lists and bibliographical references concerning such national stand-ards may be obtained on application to the Management Centre or to anyCEN member.The European Standards exist in three official versions (English, French, German).A version in any other language made by translation under the responsibility of aCEN member into its own language and notified to the Management Centre hasthe same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, the CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland,and the United Kingdom.

EN 10263-4

June 2001

Management Centre: rue de Stassart 36, B-1050 Brussels

European Committee for StandardizationComité Européen de NormalisationEuropäisches Komitee für Normung

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Barres, fil machine et fils enacier pour déformation à froidet extrusion à froid – Partie 4:Conditions techniques de livraisondes aciers pour trempe et revenu

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Table 2 - Steel grades and chemical composition for steel grades without boron (heat analysis) % by mass a) b)

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Table 3 - Steel grades and chemical composition for steel grades containing boron (heat analysis) % by mass a) b)

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Table 4 - Permissible devations between product analysis and the limitingvalues specified in tables 2 and 3 for the heat analysis

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Table 5 - Mechanical properties for steel grades without boron

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Table 6 - Mechanical properties for steel grades containing boron

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Table 6 (concluded)

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Table 7 - Hardness limits for steel grades without boron with specified (normal) hardenability (+H grades; see 6.4.1)

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Table 8 - Hardness limits for steel grades without boron with restricted hardenability scatter bands(+HH and +HL grades; see 6.4.2)a)

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Table 8 (concluded)a)

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Table 9 - Hardness limits for steelgrades containing boron with specified (normal) hardenability (+H grades; see 6.4.1)

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Table 10 - Maximum diameter for wich at least 90 % martensite shall be attainedin the core hardness test (+CH grades)

Steels without boron

Steels containing boron